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BULUSAN VOLCANO BULLETIN 20 January 2012 8:00 A.M.

Thursday, 19 January 2012 23:40

Bulusan Volcano’s (12.7667°N, 124.0500°E) seismic network detected one (1) volcanic earthquake during the past 24 hours. Wispy to weak emission of white steam clouds was observed from the vents. Ground deformation survey (precise leveling) last 14-18 November 2011 yielded slight inflation at both Inlagadian leveling line on the north-northeast flank and at Mapaso leveling line on the south-southeast flank relative to the previous survey last 16 - 20 August 2011.

Alert Level 1 status is strongly reiterated over Bulusan Volcano. The local government units and the public are reminded that entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the possibility of sudden steam and ash eruptions. Civil aviation authorities must also warn pilots to avoid flying close to the volcano’s summit as ejecta from sudden eruptions may be hazardous to aircraft. Furthermore, people living within valleys and along river/stream channels should be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall. DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s activity and any new development will be relayed to all concerned.